Here are previously unreleased poll numbers from Victory Enterprises, an Iowa-based firm, for the Iowa Republican presidential caucuses. Two of the firm's top officials work for Tommy Thompson's campaign, so they offer that caveat:

Mitt Romney: 26.3
Rudy Giuliani: 8.5
Fred Thompson: 7.0
Tommy Thompson: 6.3
John McCain: 5.3
Sam Brownback: 5.0
Tom Tancredo: 4.5
Mike Huckabee: 3.8
Ron Paul: 1.0
Duncan Hunter: 0.3
Undecided: 32.3

That represents a stunning turnaround from last year, when the same poll showed Giuliani and McCain each with 21.7 percent support and Mitt Romney with just 2.2 percent.

Unlike some other polls, this one doesn't push their undecided voters to find out who they are leaning toward, said Steve Grubbs, the polling firm's president and a strategist for the Thompson campaign.

Mr. Grubbs said Mr. McCain's drop here in Iowa is entirely due to immigration.

The 2007 poll was of 400 Republican likely caucus-goers, and was taken July 24-25. It has a margin of error of plus or minus 4.9 percentage points.

-- Stephen Dinan, national political reporter, The Washington Times